.container {
    max-width: 500px;
    margin: 0 auto;
    font-family: 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    height: 100vh;
    display: flex;
    flex-direction: column;
  }
  
  /* 顶部标题和地址 */
  .header {
    background-color: #fff;
    padding: 15px;
    border-bottom: 1px solid #eee;
  }
  
  .title {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 10px;
  }
  
  .info {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    color: #666;
  }
  
  .address {
    color: #ff5000;
  }
  
  /* 商品列表 */
  .itemList {
    flex: 1;
    overflow-y: auto;
    background-color: #fff;
    margin-bottom: 50px;
  }
  
  .item {
    display: flex;
    padding: 15px;
    border-bottom: 1px solid #f5f5f5;
  }
  
  .checkbox {
    width: 20px;
    height: 20px;
    border: 1px solid #ddd;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 10px;
    color: #ff5000;
    font-size: 14px;
  }
  
  .checked {
    border-color: #ff5000;
  }
  
  .itemContent {
    flex: 1;
  }
  
  .shopName {
    font-size: 14px;
    color: #333;
    margin-bottom: 5px;
  }
  
  .productName {
    font-size: 14px;
    color: #333;
    margin-bottom: 5px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  
  .spec {
    font-size: 12px;
    color: #999;
    margin-bottom: 10px;
  }
  
  .priceRow {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .price {
    font-size: 16px;
    color: #ff5000;
    font-weight: bold;
  }
  
  .quantity {
    display: flex;
    align-items: center;
  }
  
  .quantityBtn {
    width: 25px;
    height: 25px;
    border: 1px solid #ddd;
    background-color: #fff;
    border-radius: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
  }
  
  .quantityNum {
    margin: 0 10px;
    font-size: 14px;
  }
  
  /* 底部结算栏 */
  .footer {
    position: fixed;
    bottom: 50px;
    left: 0;
    right: 0;
    background-color: #fff;
    padding: 10px 15px;
    border-top: 1px solid #eee;
  }
  
  .footerContent {
    display: flex;
    align-items: center;
  }
  
  .selectAll {
    font-size: 14px;
    margin-left: 5px;
  }
  
  .total {
    flex: 1;
    text-align: right;
    margin-right: 15px;
  }
  
  .totalPrice {
    font-size: 14px;
  }
  
  .totalPrice .price {
    font-size: 18px;
    font-weight: bold;
  }
  
  .discount {
    font-size: 11px;
    color: #999;
  }
  
  .checkoutBtn {
    background-color: #ff5000;
    color: #fff;
    border: none;
    border-radius: 20px;
    padding: 8px 20px;
    font-size: 14px;
  }
  
  /* 底部导航栏 */
  .bottomNav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: #fff;
    display: flex;
    justify-content: space-around;
    padding: 8px 0;
    box-shadow: 0 -1px 5px rgba(0,0,0,0.1);
    z-index: 100;
  }
  
  .navItem {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  
  .navItem.active {
    color: #ff5000;
  }
  
  .navIcon {
    font-size: 20px;
    margin-bottom: 3px;
  }
  
  .navText {
    font-size: 12px;
  }